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    Any gun shop will carry lead shot in 25# cloth bags -- most people who
shoot a lot (trap, skeet, etc.) reload their own shells.  A much cheaper
alternative, however, is to buy a bunch of gallon zip-lock plastic bags and
fill them with wet sand.  A round of duct tape helps keep them shut, and if
the sand is wet they will come in at about ten pounds per bag.  They're easy
to conform to odd shapes, and you can stack them as high as you like when
bonding stuff together.  Total cost for all you need is under ten bucks,
compared with something like $20 per bag of lead shot.  When you're through
with them, they're also a lot easier to get rid of.

    Incidentally, I don't necessarily think more weight is always better.
In a lot of their aerospace epoxy products, Dexter/Hysol actually add
polymer beads to prevent too much of the adhesive being squeezed out of the
joint.  If you have enough evenly applied weight to get good squeeze-out,
that's enough.

Jim Cameron, ES builder


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Please send your photos and drawings to marvkaye@olsusa.com.
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